Operating Principle
This check valve allows oil to flow in only one direction while blocking flow in the reverse direction. Inside the valve, a spring-loaded poppet stays closed under normal conditions. When the fluid pressure reaches the cracking pressure (0.5 bar in this case) in the correct direction, the valve opens to allow flow.
If the pressure drops or the flow attempts to reverse, the spring forces the poppet closed again, preventing backflow and protecting sensitive hydraulic components.